screw-incartridge,modularandin-linedesign ... · pdf...

1

� Screw-in cartridge, modular and in-line design

� Six pressure ranges

� Pressure adjustment option:- screw with internal hexagon

��

Functional Description

Pressure relief valves VPP2-04 were designed forapplications requiring a safely valve or a pressureregulating valve working over a wide range of pressuresand flow rates.The valve basically consists of the valve body (1), poppetwith damping spool (2) and compression spring (3). Thespring pushes the poppet onto the seat (5) holding thevalve in its normally closed position. When the force,caused by the pressure acting on the exposed surfacearea of the poppet, exceeds the spring force, the valve

opens and and the flow passes from port P to port T.To optimize the valve performance, six pressure rangesare available. Choosing the closest range isrecommended. The design enables the valve to be usedas a screw-in cartridge for manifold mounting, or in asubplate and/or in-line mounted housing.The valve body and the adjustment screw are zinccoated. With models M and R the valve bodies arephosphate coated.

HA 50931/2003

ReplacesHA 5093 3/2002

Size 04, 06 � pmax up to 320 bar � Qmax up to 40 L/min

Directly operated pressure reliefvalves VPP2-04

2

HA 5093

Ordering Code

Functional Symbols

Model MA Model MB Model MP Model MC Model MD

Model RA Model RB

�

�

� Valve side� Subplate side

VPP2-04/ -

Modelscrew in cartridge Smodular valve, connection A - T MA04modular valve, connection B - T MB04modular valve, connection P - T MP04modular valve, connection A - B and B - A MC04modular valve, connection A - T and B - T MD04modular valve, connection A - T MA06modular valve, connection B - T MB06modular valve, connection P - T MP06modular valve, connection A - B and B - A MC06modular valve, connection A - T and B - T MD06in-line valve, thread G3/8 - P1, P2, T RA1in-line valve, thread G1/2 - P1, P2, T RA2in-line valve, thread G3/8 - P, T RB1in-line valve, thread G1/2 - P, T RB2

Directly operated pressure relief valve

Pressure range2 up to 25 bar6 up to 63 bar10 up to 100 bar16 up to 160 bar25 up to 250 bar32 up to 320 bar

Sealswithout designation NBRV Viton

OrderingNumbers of Sandwich / Valve Bodies (without screw-in cartridge)Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number

MA04-VP 513-0350 MA04-VP/V 513-0360MB04-VP 513-0351 MB04-VP/V 513-0361MP04-VP 513-0352 MP04-VP/V 513-0362MC04-VP 513-0353 MC04-VP/V 513-0363MD04-VP 513-0354 MD04-VP/V 513-0364

Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number

MA06-VP 556-0330 MA06-VP/V 556-0430

MB06-VP 556-0331 MB06-VP/V 556-0431

MP06-VP 556-0332 MP06-VP/V 556-0432

MC06-VP 556-0333 MC06-VP/V 556-0433

MD06-VP 556-0334 MD06-VP/V 556-0434

FOR PREFERRED TYPES SEE BOLD TYPING IN ORDERING CODEAND TABLE OF PREFERRED TYPES ON PAGE 11

3

HA 5093

OrderingNumbers of Sandwich / Valve Bodies (without screw-in cartridge)Valve body for in-line valve - NBR Ordering number Valve body for in-line valve - Viton Ordering number

RA1-06-VP 556-0336 RA1-06-VP/V 556-0436

RA2-06-VP 556-0337 RA2-06-VP/V 556-0437

RB1-06-VP 556-0338 RB1-06-VP/V 556-0438

RB2-06-VP 556-0339 RB2-06-VP/V 556-0439

Technical Data for Model SNominal size mm 04

Max. flow rate L/min 40

Max. input pressure (ports P, A, B) bar 25 63 100 160 250 320

Max. output pressure (port T) bar 320

Working pressure related to flow bar see p-Q characteristics

Hydraulic fluidHydraulic oils of power classes HM, HV to CETOP - RP 91H

in viscosity classes ISO VG 32, 46 and 68.

Fluid temperature range forstandard sealing (NBR)

°C -30 ... +80

Fluid temperature range forViton sealing (FPM)

°C -20 ... +80

Viscosity range mm2/s 20 ... 400

Max. degree of fluid contamination Class 21/18/15 according to ISO 4406 (1999).

Weight kg 0.17

Mounting position optional

Weight - models MA04, MB04, MP04- models MC04, MD04- models MA06, MB06, MP06- models MC06, MD06- models RA1, RA2, RB1, RB2

kg

0.821.321.121.421.17

p-Q Characteristics for Model S Measured at n= 35 mm2/s and t = 40 °C

Pressurepinba

r

Flow Q in L/min

Pressure range 320

Pressure range 250

Pressure range 160

Pressure range 100

Pressure range 63Pressure range 25

Min. pressure setting

Limit of valve use (Dp = 10 %)

4

HA 5093

�p-QCharacteristics,min. pressure setting Measuredatn=35mm2/s and t=40°C

Valve Dimensions Dimensions in millimetres

Model S

1 Adjustment element (screw with internal hexagon 6 mm)- clockwise rotation - pressure increase- anticlockwise rotation - pressure decrease

2 Locknut hex. 24 mm3 Wrench flats s = 27 mm - tightening torque 30 Nm4 O-ring 19.4 x 2.1 (1 pc.), supplied with valve5 Combined sealing:O-ring 14 x 1.78 (1 pc.)Back-up ring BBP80B015-N9 = 14.73 x 17.43 x 1.14 (1 pc.)supplied with valve

Mounting cavity

Type designation

5 4 3 2 1

Flow Q in L/min Flow Q in L/min

Dp,

p Emininba

r

Dp,

p Emininba

r

1 - MA04, MB04, MP04, MD042 - MC04

2

1

2

1

1 - MA06, MB06, MP06, MD062 - MC06

5

HA 5093


Size 04 (Installation dimensions to ISO 4401, CETOP - RP 121H)

Model MA

Models MB, MP

1 Name plate2 Adjustment element for pressure setting3 4 through mounting holes4 Square rings 7.65 x 1.68 (4 pcs.)supplied with valve

Required surface finish ofinterface

2 1 4

3

4 1 2

3

6

HA 5093

1 Name plate2 Adjustment elementfor pressure setting

3 4 through mounting holes4 Square rings 7.65 x 1.68 (4 pcs.)supplied with valve


Size 06 (Installation dimensions to ISO 4401, DIN 24 340)

Model MA


3 4 through mounting holes4 Square rings9.25 x 1.68 (4 pcs.)supplied with valve


2 1 4

3

1 4 2

3


Models MC, MD

7

HA 5093


Models MB, MP

Models MC, MD


3 4 through mounting holes4 Square rings 9.25 x 1.68 (4 pcs.)supplied with valve


4 1 2

3

1 4 2

3

8

HA 5093


Model RA1

Model RA2

1 Name plate2 2 through mounting holes


2

1

2

1

9

HA 5093



Model RB2

2

1

2

1


Model RB1

10

HA 5093

Spare Parts

Model Dimensions, quantity Ordering number

Screw-in cartridge - NBR

O-ring 14 x 1.78 NBR 90 (1 pc.)

513-0396

O-ring 17 x 1.8 NBR 70 (1 pc.)

O-ring 19.4 x 2.1 NBR 80 (1 pc.)

Back-up ring BBP80B015-N9 14.73 x 17.43 x 1.14 (1 pc.)


Screw-in cartridge - Viton

O-ring 14 x 1.78 (1 pc.)

513-0397

O-ring 17.17 x 1.78 (1 pc.)

O-ring 19.4 x 2.1 (1 pc.)

Back-up ring BBP80B015 14.73 x 17.43 x 1.14 (1 pc.)

Back-up ring BG1300174-PT00 17.4 x 1.3 (1 pc.)

Model Dimensions, quantity Ordering number

Modular valve size 04 - NBR Square ring 7.65 x 1.68 (4 pcs.) 513-0398

Modular valve size 04 - Viton O-ring 7.65 x 1.78 (4 pcs.) 513-0399

Modular valve size 06 - NBR Square ring 9.25 x 1.68 (4 pcs.) 556-0397

Modular valve size 06 - Viton O-ring 9.25 x 1.78 (4 pcs.) 556-0396

Model Typ, quantity Ordering number

In-line valve RA1 - NBRVSTI R1/4-ED (1 pc.)VSTI R3/8-ED (1 pc.)

556-0395


556-0393

In-line valve RB1 - NBRVSTI R1/4-ED (1 pc.) 556-0394

In-line valve RB2 - NBR

In-line valve RA1 - VitonVSTI R1/4-ED - Viton (1 pc.)VSTI R3/8-ED - Viton (1 pc.)

556-0392


556-0390

In-line valve RB1 - VitonVSTI R1/4-ED - Viton (1 pc.) 556-0391

In-line valve RB2 - Viton

Seal kit for modular valve Seal kit for screw-in cartridge

11

HA 5093

Preferred Types of ValvesType Ordering Number Type Ordering Number

VPP2-04/S-10 513-0302 VPP2-04/MP06-10 513-0435VPP2-04/S-25 513-0304 VPP2-04/MP06-25 513-0463VPP2-04/S-32 513-0305 VPP2-04/MP06-32 513-0477

VPP2-04/MP04-10 513-0430 VPP2-04/RA2-10 513-0439VPP2-04/MP04-25 513-0458 VPP2-04/RA2-25 513-0467VPP2-04/MP04-32 513-0472 VPP2-04/RA2-32 513-0481

12

HA 5093

� The packing foil is recyclable.� The protecting plate can be returned to the manufacturer.� Mounting studs must be ordered separately. Tightening torques are: size 04 - 5 Nm, size 06 - 8.9 Nm.� The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should

not be construed in any case as a guaranteed representation of the product properties in the sense of the law.

Caution!

Subject to alteration without notice!

ARGO-HYTOS a. s. CZ - 543 15 VrchlabíTel.: +420-499-403111, Fax: +420-499-403421E-mail: [email protected]

1


� Cartridge, modular and in-line design

� Five pressure ranges

� Two pressure adjustment options:- screw with internal hexagon- hand knob with arrestment

Pressure relief valves VPN1 are pilot operated pressurevalves designed for system pressure limitation.The pressure adjustment provides the adjustmentscrew (4). In its basic state, the valve is closed. Thepressure acts on the face area of the control spool (1)and at the same time through orifice (2) on the controlspool rear side, which is preloaded by a spring andfurther on through orifice (3) on the pilot valve ball (6).When the increasing system pressure reaches thevalue, which is preset by spring (5), the valve opens and

the control flow passes through the pilot valves. Thespool area which is preloaded by the spring becomesrelieved, the spool control edge opens the radial boresin bushing (7) and the fluid passes from port P to T.Thecontrol flow is routed through groove (8) to channel T.Valve adjustment can be lockwired (9).The valve body and the adjustment screw are zinccoated. With models M and R the valve bodies arephosphate coated.

��

P

T

HA 51611/2003


Size 06 � pmax up to 320 bar � Qmax up to 70 L/min

Pilot operated pressurerelief valve VPN1-06

2

HA 5161

Ordering Code

VPN1-06/ -

Nominal size

Pilot operated pressure relief valve

Modelscrew in cartridge Smodular valve, flow from A to T MAmodular valve, flow from B to T MBmodular valve, flow from P to T MPmodular valve, flow from A to B and B to A MCmodular valve, flow from A and B to T MDin-line valve, thread G3/8 RA1in-line valve, thread G1/2 RA2in-line valve, thread G3/8 RB1in-line valve, thread G1/2 RB2

Pressure range6 up to 63 bar10 up to 100 bar16 up to 160 bar21 up to 210 bar32 up to 320 bar

Sealingwithout designation NBRV FPM (Viton)

Adjustment elementS screw with internal hexagonR hand knob


Functional Symbols


Model RA Model RB

�

�

Ordering Numbers of Sandwich / Valve Bodies (without screw-in cartridge)Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number

MA06-VP 556-0330 MA06-VP/V 556-0430

MB06-VP 556-0331 MB06-VP/V 556-0431

MP06-VP 556-0332 MP06-VP/V 556-0432

MC06-VP 556-0333 MC06-VP/V 556-0433

MD06-VP 556-0334 MD06-VP/V 556-0434

Valve bodyfor in-line valve - NBR

Ordering numberValve body

for in-line valve - VitonOrdering number

RA1-06-VP 556-0336 RA1-06-VP/V 556-0436

RA2-06-VP 556-0337 RA2-06-VP/V 556-0437

RB1-06-VP 556-0338 RB1-06-VP/V 556-0438

RB2-06-VP 556-0339 RB2-06-VP/V 556-0439


3

HA 5161

Technical DataNominal size mm 06

Max. flow rate L/min 70

Max. control flow L/min 0.35

Max. input pressure (ports P, A, B) bar 63; 100; 160; 210; 320

Max. output pressure (port T) bar 320

Working pressure related to flow bar see p-Q characteristics

Hydraulic fluidHydraulic oils of power classes HM, HV to CETOP-RP 91H



°C -30 ... +80

Fluid temperature range forViton sealing (FPM) °C -20 ... +80

Viscosity range mm2/s 20 ... 400


Weight - model S- models MA, MB, MP- models MC, MD- models RA1, RA2, RB1, RB2

kg

0.251.21.51.25


p-Q Characteristics for Model S Measured at n= 35 mm2/s and t = 40 °C

pressure range 32

pressure range 21

pressure range 16

pressure range 10

pressure range 6

Flow Q in L/min

Pre

ssur

ep

inba

r

�p-Q Characteristics Measured at n= 35 mm2

/s and t = 40 °C

Flow Q in L/min

Dp,

p Em

inin

bar

MC

MA, MB, MP, MD

S

4

HA 5161


Model S

Mounting cavity

Type designation

6 5 4 3 1

6 5 4 2

1 Adjustment element (screw with internal hexagon 6 mm)2 Adjustment element R (hand knob)

With all adjustment elements:- clockwise rotation - pressure increase- anticlockwise rotation - pressure decrease

3 Locknut hex. 27 mm4 Wrench flats s = 24 mm - tightening torque 60 Nm5 O-ring 19.4 x 2.1 NBR 80 (1 pc.)

supplied with valve6 Combined sealing:

O-ring 14 x 1.78 NBR 90 (1 pc.)Back-up ring BBP80B015-N9 14.73 x 17.43 x 1.14 (2 pcs.)supplied with valve

5

HA 5161


Model MA

Required surfacefinish ofinterface

1 Name plate2 Adjustment elements for pressure setting3 4 through mounting holes4 Square rings 9.25 x 1.68 (4 pcs.)

supplied with valve

2 3 4

1

6

HA 5161

Models MB and MP



supplied with valveRequired surfacefinish ofinterface

3 4 2

1

7

HA 5161

Valve Dimensions Dimensions in milimetres

Models MC and MD


supplied with valveRequired surfacefinish ofinterface

1

2 3 4

� The packing foil is recyclable.� The protecting plate can be returned to the manufacturer.� Mounting studs must be ordered separately. Tightening torque is 8.9 Nm.� The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should

not be construed in any case as a guaranteed representation of the product properties in the sense of the law

Caution!

8

HA 5161

Model RA1

Model RA2



2

1

2

1


9

HA 5161



Model RB1

Model RB2

2

1

2

1

Valve Dimensions Dimensions in milimetres

10

HA 5161

Model Dimensions, number Ordering number

Screw-in cartridge - NBR

O-ring 14 x 1.78 NBR 90 (1 pc.)

556-0399

O-ring 17 x 1.8 NBR 70 (1 pc.)

O-ring 19.4 x 2.1 NBR 80 (1 pc.)

O-ring 9.25 x 1.78 NBR 90 (1 pc.)



Screw-in cartridge - Viton

O-ring 14 x 1.78 (1 pc.)

556-0398

O-ring 17 x 1.8 (1 pc.)

O-ring 19.4 x 2.1 (1 pc.)

O-ring 9.25 x 1.78 (1 pc.)



Model Dimensions, number Ordering numberModular valve - NBR Square ring 9.25 x 1.68 (4 pcs.) 556-0397

Modular valve - Viton O-ring 9.25 x 1.78 (4 pcs.) 556-0396

Model Typ, number Ordering number

In-line valve RA1 - NBR VSTI R1/4-ED (1 pc.)VSTI R3/8-ED (1 pc.)

556-0391

In-line valve RA2 - NBR VSTI R1/4-ED (1 pc.)VSTI R1/2-ED (1 pc.)

556-0393

In-line valve RB1 - NBRVSTI R1/4-ED (1 pc.) 556-0395

In-line valve RB2 - NBR


556-0390


556-0392

In-line valve RB1 - VitonVSTI R1/4-ED - Viton (1 pc.) 556-0394

In-line valve RB2 - Viton

Preferred Types of ValvesType Ordering number Type Ordering number

VPN1-06/S-10S 556-0301 VPN1-06/MP-32S 556-0424

VPN1-06/S-21S 556-0303 VPN1-06/RA2-10S 556-0561

VPN1-06/S-32S 556-0304 VPN1-06/RA2-21S 556-0563

VPN1-06/MP-10S 556-0421 VPN1-06/RA2-32S 556-0564

VPN1-06/MP-21S 556-0423

Spare Parts

Set of the seals for screw-in cartridgeSet of the seals for modular valve



1

� Modular and in-line design

� Five pressure ranges

� Two pressure adjustment options:- screw with internal hexagon- hand knob with arrestment

� Installation dimensions to ISO 4401and DIN 24 340-A10


Pressure relief valves VPN2 are pilot operated pressurevalves designed for system pressure limitation.The pressure adjustment is controled by the adjustmentscrew (4). In its basic state, the valve is closed. Thepressure acts on the face area of the control spool (1)and at the same time through orifice (2) on the controlspool rear side, which is preloaded by a spring andfurther on through orifice (3) on the pilot valve ball (6).When the increasing system pressure reaches the value,which is preset by spring (5), the valve opens and thecontrol flow passes through the pilot valve. The spoolarea which is preloaded by spring becomes relieved, thespool control edge opens the radial bores in bushing (7)

and the fluid passes from port B to T. The control flow isrouted through slot (8) to port T.When an accurate pressure control, which does notdepend on pressure variations in port T (only for modelsRC2 and RC3, see Functional Symbols), is required themodel "Y" with external port for pilot flow is to be used. If arelieving of the valve on a lower pressure as that set upby the spring (5) is needed, the model with port "X" (10) isto be used.The valve body and the adjustment screw are zinccoated. With models M and R the valve bodies arephosphate coated.

TA2 A2 P2 B2 TB2

TA1 A1 P1 B1 TB1

HA 51642/2005


Size 10 � ...5076 PSI (350 bar) � ...39.68 US GPM (150 L/min)

Pilot operated pressurerelief valve VPN2-10/MR

��

2

HA 5164

Ordering Code

VPN2-10/ -

Nominal size 10

Pilot operated pressure relief valve

Modelmodular valve, flow from A to TA MAmodular valve, flow from B to TB MBmodular valve, flow from P to TA MPmodular valve, flow from A to B and B to A MCmodular valve, flow from A to TA and B to TB MDin-line valve, thread P1, P2 - G3/4; T - G1 RA2in-line valve, thread P - G3/4; T - G1 RB2in-line valve, thread P - G3/4; T - G1; X - G1/4 RC2in-line valve, thread P - G3/4; T - G1; Y - G1/4 RC3

Pressure range6 up to 913 PSI (63 bar)10 up to 1450 PSI (100 bar)16 up to 2321 PSI (160 bar)21 up to 3045 PSI (210 bar)32 up to 5076 PSI (350 bar)

Model with two pressure relief cartridges32/10 pressure setting 5076 PSI (350 bar)in port A and 1450 PSI (100 bar) in port B, etc.

Sealswithout designation NBRV FPM (Viton)

Adjustment elementS screw with internal hexagonR hand knob

Functional Symbols

Model RA2 Model RB2 Model RC2 Model RC3



OrderingNumbers of Sandwich / Valve Bodies (without screw-in cartridge)Valve body for modular valve - NBR Ordering number Valve body for modular valve - Viton Ordering number

MA10-VP 556-0670 MA10-VP/V 556-0675

MB10-VP 556-0671 MB10-VP/V 556-0676

MP10-VP 556-0672 MP10-VP/V 556-0677

MC10-VP 556-0673 MC10-VP/V 556-0678

MD10-VP 556-0674 MD10-VP/V 556-0679

Valve body for in-line valve - NBR Ordering number Valve body for in-line valve - Viton Ordering number

RA2-10-VP 556-0688 RA2-10-VP/V 556-0689

RB2-10-VP 556-0682 RB2-10-VP/V 556-0686

RC2-10-VP (RC3-10-VP) 556-0683 RC2-10-VP/V (RC3-10-VP/V) 556-0687


�

�

3

HA 5164

Technical DataNominal size mm 10

Max. flow rate US GPM (L/min) 39.683 (150)

Max. control flow US GPM (L/min) 0.132 (0.5)

Max. input pressure (ports P, A, B) PSI (bar) 913 (63); 1450 (100); 2321 (160); 3045 (210); 5076 (350)

Max. output pressure (port T) PSI (bar) 5076 (350)

Working pressure related to flow PSI (bar) see p-Q characteristics

Hydraulic fluidHydraulic oils of power classes HM, HV to CETOP-RP 91H



°F (°C) -22 ... 176 (-30 ... +80)

Fluid temperature range forViton sealing (FPM)

°F (°C) -4 ... 176 (-20 ... +80)

Viscosity range SUS (mm2/s) 68 ... 1840 (20 ... 400)


Weight - models MA, MB, MP- models MC, MD- models RA2, RB2, RC2, RC3

lbs (kg)5.714 (2.6)6.593 (3.0)5.934 (2.7)


p-Q Characteristics Measured at n= 166 SUS (35 mm2/s) and t = 104 °F (40 °C)

�p-Q Characteristics Measured at n= 166 SUS (35 mm2/s) and t = 104 °F (40 °C)

Flow Q in US GPM (L/min)

Dp,

p Em

inin

PS

I(ba

r)

MC

MP

MA, MB

Pre

ssur

ese

tting

pin

PS

I(ba

r)

Flow Q in US GPM (L/min)

pressure range 32

pressure range 21

pressure range 16

pressure range 10

pressure range 6

4

HA 5164

Valve Dimensions Dimensions in inches and millimetres (in brackets)

Model MA

Model MB

1 Name plate2 Adjustment elements

for pressure setting3 4 through mounting holes4 Square rings

12.42 x 1.68 (5 pcs.)supplied with each valve

2 4

1 3

4 2

1 3


5

HA 5164


Model MP

Models MC, MD

1 Name plate2 Adjustment elements

for pressure setting3 4 through mounting holes4 Square rings

12.42 x 1.68 (5 pcs.)supplied with each valve

2 4

1 3

4 2

1 3


6

HA 5164


Model RA2

Model RB2

1 Name plate2 2 through mounting holes3 2 x M6 for attachment

under panel

2

1


under panel

2

1

3

3

7

HA 5164


Model RC2, RC3


under panel

21

3

Spare PartsModel Dimensions, number Ordering number

Modular valve - NBR Square ring 12.42 x 1.68 NBR 90 (5 pcs.) 556-0384

Modular valve - Viton O-ring 12.42 x 1.78 (5 pcs.) 556-0385

Model Typ, number Ordering number


556-0655

In-line valve RB2,RC2, RC3 - NBR

VSTI R1/4-ED (1 pc.) 556-0657


556-0656

In-line valve RB2,RC2, RC3 - Viton

VSTI R1/4-ED - Viton (1 pc.) 556-0658

Type Ordering number Type Ordering number

VPN2-10/MP-10S 556-1421 VPN2-10/RA2-10S 556-1561

VPN2-10/MP-21S 556-1423 VPN2-10/RA2-21S 556-1563

VPN2-10/MP-32S 556-1424 VPN2-10/RA2-32S 556-1564

Preferred Types of Valves

8

HA 5164

Caution!

� The packing foil is recyclable.� The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should




1


The pressure valves VRP2 are directly operatedreducing valves for vertical stacking assembliesdesigned as 3-way valves, i.e. with pressure protectionof the secondary circuit.The valve consists of the valve body (1), control spool(2), spring (3), adjustment element (4) and the plugG 1/4 (5) for pressure measuring and, if necessary, of acheck valve.

Model “A”With this model, the fluid enters into the valve body fromthe primary circuit through port A1 and passes throughthe metering edge, where its pressure is reduced. Thereduced pressure corresponds with the setting of thecontrol spring. At the same time, this pressure affectsalso the surface area of the control spool opposed to thespring (the pressure can be measured at the port G 1/4which is normally closed by plug 5). Thus the staticbalance of the spool is ensured. If the reduced pressurechanges, a respective control action takes place and thereduced pressure returns to its preset value. The flowfrom the output port A2 passes then to the user. Ifpressure behind the valve increases due to the effect ofthe load acting on the user, the spool shifts further

against the spring until the second metering edge opensand the excessive flow drains through port T. Theleakage from the spring room is also routed to port T.The reverse free-flow from port A2 to port A1 passesthrough a check valve which is connected parallel to themetering edge.

Model “B”With model “B”, the pressure reduction follows from portP2 to port P1, but it takes place only when the flow in portB passes in the direction to the user (not opposite). Theprotection of the secondary circuit is also ensured forone flow direction only.

Model “P”With model “P”, the pressure reduction follows from portP2 to port P1, but is effective in both flow directionsthrough the directional valve (as well as the protection ofthe secondary circuit).

The valves are delivered with basic surface treatment.The valve body is phosphate coated, whereas thesurfaces of the other parts are zinc coated.

A1

B2

B1

A2

��

� For stacking assemblies

� 4 pressure ranges

� Pressure reduction in ports A or P

� Model “A” with check valve

� Installation dimensions to ISO 4401/CETOP-RP 121H

HA 51425/2005


Size 04 � ... 4600 PSI (320 bar) � ... 5.3 US GPM (20 L/min)

Directly operated pressurereducing valves VRP2-04

2

HA 5142

Nominal size mm 04

Maximal flow US GPM (L/min) 5.3 (20)

Max. imput pressure PSI (bar) 4641.3 (320)

Reduced pressure PSI (bar) 363(25)

914(63)

2321(160)

3046(210)

Hydraulic fluid Hydraulic oils of power classes HM, HV to CETOPRP 91 H in viscosity classes ISO VG 32, 46 and 68

Fluid temperature range °F (°C) -22 ... +176 (-30 ... +80)

Viscosity range SUS (mm2/s) 98 ... 1840 (20 .. 400)

Maximum degree of fluid contamination Class 21/18/15 to ISO 4406 (1999).

Weight - model “A”model “B”, “P”

lb (kg) 1.81 (0.82)1.32 (0.60)


VRP2-04- /

Nominal size

Pressure reduction Pressure controlIn port A2 from port A2 AIn port P1 from port B1 BIn port P1 from port P1 P

Reducing valve, directly operated Pressure rangeAdjustable up to 363 PSI (25 bar)2Adjustable up to 914 PSI (63 bar)6

Adjustable up to 2321 PSI (160 bar)16Adjustable up to 3046 PSI (210 bar)21

Adjustment elementScrew with outside hexagon 4 mmS

Functional SymbolsVRP 2-04-A . / . . VRP 2-04-B . / . . VRP 2-04-P . / . .

Technical Data


Ordering Code

3

HA 5142

Caution!

Pre

ssur

edr

opin

PS

I(ba

r)

Flow in US GPM (L/min)

Model “A”

Model “A”Models “P” und “B”

Model “A”Models “P” und “B”

Measured at � = 166 SUS (35 mm2/s) and t = 104°F (40°C)

Type Ordering numberVRP2-04-PS/6 517-0068VRP2-04-PS/16 517-0069VRP2-04-PS/21 517-0070

Preferred Types of Valves

Saf

ety

pres

sure

inP

SI(

bar)

Flow in US GPM (L/min)

914(63)

� The packing foil is recyclable.� If the valve is used separately without a directional valve, a cover plate DK1-04/32-3 with the same installation

dimensions can be ordered. This plate connect port A1 with port P1 - see catalogue Adapter and Blanking PlatesHA 0003.

� Mounting bolts M5x50 or studs must be ordered separately. Tightening torque of the screws is 3.7 ft-lbs (5 Nm).� For applications outside these parameters, please consult the manufacturer.� The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should


1

2

3

3046(210)

2321(160)

363(25)

Red

uced

pres

sure

inP

SI(

bar)

�p-Q Characteristics

p-Q Characteristics

4

HA 5142

Required surface finish ofinterface.


Model „A“

1 Name plate2 Pressure adjustment element “S”- screw with outside hex. s=4 mm3 Plug for pressure gauge connection, thread G 1/44 Locknut5 4 through mounting holes6 SQUARE RING 7.65x1.68 (4 pcs.), supplied with each valve

Type VRP2-04-AS/ ..

Model „B“ and �P�

Type VRP2-04-B(P)S/ ..

2 4 6

1 3

5



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